When cement is mixed on the building site, it is important that
the consistency and setting time of the cement are correct.
Explain:
( a ) the tests that may be carried out to determine the
consistency and setting time of cement.
( b ) why it is important that the consistency and setting time are
correct.
Portland cement is a fine, dry grey powder. However, when we see
concrete in buildings it is a hard, strong and solid material.
Explain the process which causes this transformation in
cement.
List the functions of aggregates in concrete
Any ideas on how to answer the aboe questions?
